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(No Model.)

T. s TONGUE. DRIVING MEGHANISM FOR SEWING AND OTHER MACHINES No.253,240.. Patented Feb. 7.11882 torne s UNITED STATES PATENT OFrrca.

THOMAS S. TONGUE, OF BIRMINGHAM, COUNTY OF WARYVIOK, ENGLAND.

DRIVING MECHANISM FOR SEWING AND OTHER MACHINES.

SPECIFICATION forming part of Letters Patent No. 253,240, dated February'7, 1882. Application filed December 29, 1881. (N model.) Patented inEngland October 24, 1878.

- scription of the invention, which will enable others skilled in theart to which it appertains to made and use the same, reference being hadto the accompanying drawings, which form a part of this specification. I

This invention relates to certain improve ments in the driving mechanismfor sewing and other machines, and has for its object to so constructand arrange the fly-wheel and the driving-wheel,thatthelattercan be madeeither fast or loose upon its shaft at the will of the operator, wherebyhe will be enabled to wind cotton for shuttles or on spoolswithoutdriving the machine.

A further object of my invention is to improve the arrangement oftreadles, as hereinafter fully set forth.

In the drawings, Figure 1 illustrates the application of my improvementto a sewing-machine stand or frame. Fig. 2 is a perspective view of thedriving-wheel. Fig. 3 is a view of the spring-ring and wedge, and Fig.4. represents the fly-wheel, and Fig. 5 represents a modification.

A indicates the fulcrum-bar of the two treadles B B, which bar I arrangeat the front of the frame or stand (J, the treadles leading therefromrearward or away from the operator.

D indicates a bar connecting the fulcrumbar with the rear tie-rod, E,aud F represents the standard, which is secured upon barD, and on whichthe vibratory beam G is pivoted.

This vibratory beam connects with the rear ends of the treadles by meansof links H, one of the said treadles being connected by acounecting-rod,I, with a crank upon the drivingshaft K.

011 the driving-shaft are mounted the loose driving-wheel L and thefly-wheel M, which is rigid upon said shaft. The fly-wheel, or, asherein shown, the driving-wheel, is recessed, as in Fig. 2, and within acircular channel in said recess is arranged an iron or steelspring-ring, N, made square in cross-section, and having a slot, 0,which receives one end of a wedge, P. The hub Q of the fly-wheel closesthe recess of thedriving-wheel, and upon said hub, at differentdistances from its center, are the two pins R B, arranged eccentrically,as shown in Fig. 4. These pins project within the recess of thedriving-wheel and are employed to act upon the wedge. When the fly-wheelis revolved in one direction the'outer pin, acting upon the wedge at apoint nearthe connection of the wedge with the ring, will cause the ringto turn in its circular bed or channel; but during a reverse movement ofthe fiy-wheel the inner pin, striking the inner end of the wedge, willmove or turn the samefrom the radial position shown in Fig. 2, and hencespring the ring so as to cause it to bind against the walls of itschannel, and thus cause the driving-wheel to rotate in unison with thefly-wheel'and the drivingshaft. The driving-wheel being thus either fastor loose u'ponuts shaft at the will of the operator, he is enabled towind the cotton for shuttles or on spools without driving the machine,

By the application of the above-described driving mechanism to such andother similar purposes or uses the action and driving-are rendered muchless laborious than heretofore,

the beam being situated with its treadles at the rear of the machine, inlieu of at the front, the latter being 'too direct a motion and tiringand difficult to work but by transferring the beam to the position shownthe machine can be operated with great ease.

In the modification, Fig. 5, the inner and I fixed wheel, S, haswedge-shaped recesses in its periphery, and the outer wheel, S, isrecessed to receive the driving-wheel and formed with an annular wall,T. Small balls U are arranged within these recesses, so that when theinner wheel turns in one direction the balls will be wedged between thewall T and the walls of the smaller ends of the wedge-shaped recesses,thus causing the outer wheel to rotate with the inner wheel.

however, brings the balls into the larger parts of the wedge-shapedrecesses, and hence the outer wheel will not be driven by the move, mentof the inner wheel. f

\Vhat I claim is-- l- The o at on, with the treadl e mechilmsmhm'mg efulcrum-bar A atthe front A reverse movement,

of the machine, from which extend rearwardly the treadles connected by avibratory beam, G,

at the rear of the machine in lieu of the front, anda rod connecting thetreadlcs with the drivingshaft, of the flywheel secured rigidlyon thelatter, andhavingpins R, and the fly-whcel carrying a spring-ring, N,adapted to turn within an annular channel, and having the wedge P,adapted to be engaged by the pins on the flywheel, snbstantially as andfor the purpose herein shown and specified.

2. The combination,with the fulcrum -bar A atthe front of the machine,of the treadles B, pivoted or having bearings thereon at their frontends, and extending rearwardly therefrom and connected by the vibratorybeam G at the rear of the machine in lieu of the front, and the rodconnecting one of the treadles THOMAS SKELDING TONGUE.

\Vitnesses:

J OHN KENDRICK,

CHARLES E. BATGHELOR.

